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arXiv 2106.00481hep-ph
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暗生模型带电变体中的暗物质

Dark matter in a charged variant of the Scotogenic model

Valentina De Romeri, Miguel Puerta, Avelino Vicente

摘要:

暗生模型是联系暗物质和中微子质量的最流行的可能性之一。在这项工作中,我们讨论了一个变种的暗生模型,其中包括带电费米子和一个双重超荷$3/2$。中微子质量是在单圈水平上诱导的,这要归功于属于暗扇区的状态。然而,与标准的暗生模型相反,在这个版本中只有标量暗物质候选者是可行的。在介绍了模型并解释了中微子质量产生的一些特殊性之后,我们集中讨论了它的暗物质现象。我们发现,所观察到的暗物质遗迹密度可以正确地复制在通常的参数空间区域中发现的标准暗生模型或惰性双模型。此外,带电费米子的存在可能会打开新的区域,只要允许对参数进行一些调整。

英文摘要:

Scotogenic models are among the most popular possibilities to link dark matter and neutrino masses. In this work we discuss a variant of the Scotogenic model that includes charged fermions and a doublet with hypercharge $3/2$. Neutrino masses are induced at the one-loop level thanks to the states belonging to the dark sector. However, in contrast to the standard Scotogenic model, only the scalar dark matter candidate is viable in this version. After presenting the model and explaining some particularities about neutrino mass generation, we concentrate on its dark matter phenomenology. We show that the observed dark matter relic density can be correctly reproduced in the usual parameter space regions found for the standard Scotogenic model or the Inert Doublet model. In addition, the presence of the charged fermions may open up new regions, provided some tuning of the parameters is allowed.

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